Arzén
33
As
Skupina
15
Perióda
4
Orbitál
p
Protóny
Elektróny
Neutróny
33
33
42
Hlavné vlastnosti
Protónové číslo
33
Atómová hmotnosť
74,9216
Hmotnostné číslo
75
Kategória
Polokovy
Farba
Strieborná
Rádioaktívny
Nie
From the Latin word arsenicum, Greek arsenikon
Kryštálová sústava
Jednoduchý trigonálny
História
Greek historian Olympiodorus of Thebes roasted arsenic sulfide and obtained white arsenic during 5th century AD.
Albertus Magnus is believed to have been the first to isolate the element from a compound in 1250, by heating soap together with arsenic trisulfide.
In 1649, Johann Schröder published two ways of preparing arsenic.
Albertus Magnus is believed to have been the first to isolate the element from a compound in 1250, by heating soap together with arsenic trisulfide.
In 1649, Johann Schröder published two ways of preparing arsenic.
Elektróny v obale
2, 8, 18, 5
Elektrónová konfigurácia
[Ar] 3d10 4s2 4p3
Prawns are known to contain quite high levels of arsenic
Fyzikálne vlastnosti
Skupenstvo
Tuhé látky
Hustota
5,776 g/cm3
Teplota topenia
1090,15 K | 817 °C | 1502,6 °F
Teplota varu
876,15 K | 603 °C | 1117,4 °F
Skupenské teplo topenia
27,7 kJ/mol
Skupenské teplo varu
32,4 kJ/mol
Tepelná kapacita
0,329 J/g·K
Množstvo v zemskej kôre
0,00021%
Množstvo vo vesmíre
8×10-7%
Registračné číslo CAS
7440-38-2
PubChem CID číslo
5359596
Atómové vlastnosti
Atómový polomer
119 pm
Kovalentný polomer
119 pm
Elektronegativita
2,18 (Paulingova stupnica)
Ionizačný potenciál
9,7886 eV
Atómový objem
12,97 cm3/mol
Tepelná vodivosť
0,502 W/cm·K
Oxidačné stavy
-3, 2, 3, 5
Aplikácie
The toxicity of arsenic to insects, bacteria and fungi led to its use as a wood preservative and as insecticides.
Arsenic is used in bronzing, pyrotechny, and for hardening and improving the sphericity of shot.
Gallium arsenide is a semiconductor used in laser diodes and LEDs.
Small amounts of arsenic can be used in lead alloys for ammunition.
Arsenic is used in bronzing, pyrotechny, and for hardening and improving the sphericity of shot.
Gallium arsenide is a semiconductor used in laser diodes and LEDs.
Small amounts of arsenic can be used in lead alloys for ammunition.
Arsenic and its compounds are poisonous
Izotopy
Stabilné izotopy
75AsNestabilné izotopy
60As, 61As, 62As, 63As, 64As, 65As, 66As, 67As, 68As, 69As, 70As, 71As, 72As, 73As, 74As, 76As, 77As, 78As, 79As, 80As, 81As, 82As, 83As, 84As, 85As, 86As, 87As, 88As, 89As, 90As, 91As, 92As